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Pennies made after 1982 are made of 97.5% zinc and 2.5% copper instead of 95% copper and 5% zinc. Pree 1982 pennies weighed 3.10g. The penny contained 2.95g of zinc and 0.15g of co
Q. Determine the frequency of light wave? Ans. The wavelength of red light is 7.0 x 10 -7 m. What is the frequency? c = λv The first thing to remember here is that
Vacancies A vacancy is a lattice position that is vacant due to the atom is missing. It is formed when the solid is formed. Vacancies are simply empty atom site.
Photon absorption for IR spectroscopy Photon absorption for IR spectroscopy
why dipole moment of CH3CL is more than CH3F
a hittorf cell fitted with Ag-AgClis filled with HCl solution that contains 0.0003856g HCl/g water. A current of 2 mA is passed for exactly 3 hours. the solutions are withdrawn, we
first law of crystallography
Volumetric method for acids and bases - chemical methods Molecular mass of an acid can be ascertained by dissolving a known mass of the acid in water and titrating the solution
how do you calculate the mass atomic number of an element?
Anomalous behaviour of aluminium
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